PC228USLC-3

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Engine   
Model    Komatsu SAA6D107E-1 
Type    Water-cooled, 4-cycle, direct injection 
Aspiration    Turbocharged and air-to-air aftercooled 
Number of cylinders   
Bore  4.21"  107 mm 
Stroke  4.88"  124 mm 
Piston displacement  408 in³  6.69 ltr 
Power rating     
Gross (SAEJ1995)  155 HP @ 2000 rpm  116 kW @ 2000 rpm 
Net (ISO 9249/SAEJ1349)  148 HP @ 2000 rpm  110 kW @ 2000 rpm 
Fan drive type    Mechanical 
Governor    All-speed control, electronic 
EPA Tier 3 and EU Stage 3A emission ready.     
 
Hydraulics   
Type    HydrauMind (Hydraulic Mechanical Intelligence New Design) system Closed-center system with load-sensing valves and pressure-compensated valves. 
Number of selectable working modes   
Main pump    Variable-capacity piston pump. 
Pumps for    Boom, arm, bucket, swing, and travel circuits. 
Maximum flow  113 U.S. gpm  428 ltr 
Supply for control circuit    Self-reducing valve 
Hydraulic motors:     
Travel    2 x axial piston motor with parking brake 
Swing    1 x axial piston motor with swing holding brake 
Relief valve setting:     
Implement circuits  5,400 psi  37.3 MPa 380 kgf/cm2 
Travel circuits  5,400 psi  37.3 MPa 380 kgf/cm2 
Swing circuits  4,120 psi  28.4 MPa 290 kgf/cm2 
Pilot circuit  470 psi  3.2 MPa 33 kgf/cm2 
Hydraulic cylinders:     
(Number of cylinders – bore x stroke x rod diameter)     
Boom / 2  4.7" x 54.5" x 3.3"  120 mm x 1385 mm x 85 mm 
Arm / 1  5.3" x 58.7" x 3.7"  135 mm x 1490 mm x 95 mm 
Bucket / 1  4.5" x 44.1" x 3.2"  115 mm x 1120 mm x 80 mm 
 
Operating Weight (approximate)   
Operating weight, including 5700 mm 18'8" one-piece boom, 2925 mm 9'7" arm, SAE heaped 0.80 m3 1.05 yd3 backhoe bucket, operator, lubricant, coolant, full fuel tank, and the standard equipment. 
Shoes  Operating Weight  Ground Pressure 
600 mm
24" 
22630 kg
49,900 lb 
0.48 kg/cm²
6.83 psi 
700 mm
28" 
22900 kg
50,490 lb 
0.41 kg/cm²
5.83 psi 
800 mm
31.5" 
23180 kg
51,110 lb 
0.37 kg/cm²
5.28 psi 
 
Drive and Brakes   
Steering control    Two-lever with pedals 
Drive method    Hydrostatic 
Maximum drawbar pull  45,410 lb  202 kN 20600 kgf 
Travel motor    Axial piston motor, in-shoe design 
Reduction system    Planetary gear type, double reduction 
Gradeability    70%, 35° 
Maximum travel speed (Auto-Shift):     
High  3.4 mph  5.5 km/h 
Mid  2.5 mph  4.1 km/h 
Low  1.9 mph  3.0 km/h 
Service brake    Hydraulic lock 
Parking brake    Oil disc brake 
 
Swing System   
Drive method    Hydrostatic 
Swing reduction    Planetary gear type, double reduction 
Swing circle lubrication    Grease-bathed 
Swing lock    Oil disc brake 
Swing speed    11.0 rpm 
Swing torque  48,124 ft lbs  6656 kg.m 
 
Undercarriage   
Center frame    X-frame 
Track frame    Box-section 
Seal of track    Sealed track 
Track adjuster    Hydraulic 
Number of shoes (each side):    49 
Number of carrier rollers (each side):   
Number of track rollers (each side):   
 
Coolant and Lubricant Capacity (refilling)   
Fuel tank  84.5 U.S. gal  320 ltr 
Coolant  5.5 U.S. gal  21.0 ltr 
Engine  6.1 U.S. gal  23.1 ltr 
Final drive, each side  1.4 U.S. gal  5.2 ltr 
Swing drive  1.9 U.S. gal  7.1 ltr 
Hydraulic tank  43.6 U.S. gal  165 ltr 

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